iGadgitz Xtra 82mm Centre Pinch Snap-On Front Lens Hood Cap Cover with Cord for Sigma SLR & DSLR Camera Lenses Protects your delicate lens from dust, dirt, and scratches. Easy to use. Simply pinch the centre to quickly attach to the front of your camera lens. Made of high impact plastic for extra durability. Available in different sizes: 37mm, 49mm, 52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm & 82mm. NOTE: This cap is compatible with Sigma 82mm lenses. Please verify your camera's lens is mentioned as compatible in the description below.